Final answer:
A zero pair refers to a negative and a positive number that equal in magnitude but opposite in sign, which cancel each other out when added together, resulting in zero.
Step-by-step explanation:
When we add integers and a negative and a positive number cancel each other out, the term used to describe this situation is a 'Zero pair'. This happens because the positive and negative values are equal in magnitude but opposite in sign, so their sum is zero. For example, if you have +3 and -3, adding them together gives you 0, which would be considered a zero pair. It's like having a pair of opposites that, when put together, neutralize each other and result in zero.